Closure



y 1932- H. M. MATHIEU DE solssAc- 1,858,163-

CLOSURE Filed April 14,- 19:50

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Patented MaylO, 1932 UNITED STATES PATENT orricr.

HENRI IARIE FIATHIEU DE BOISSAG, OF ST. GEBIAIN' EN LAYE, FRANCE, ASSIGNOR TO THE SOCIETY PIERRE REMY & 01E, OF CLIGHY, FRANCE CLOSURE Application filed April 14, 1930, Serial No. 444,250, and in Belgium January 81, 1930.

The present invention relates to closures and, more. particularly, to stoppers or covers for bottles.

One of theobjects of the invention is to provide an elastic female element (stopper or cover) designed to en age by rotary movement with a rigid nnle element so that rotation of the female element beyond a predetermined point tends to lock the latter in position. 7

Other objects will appear in the course of the detailed description now to be given with reference to the accompanying drawings, in

which Fig. 1 represents, in elevation, a female element formed in accordance with one constructive embodiment of the invention;

Fig. 2 is a diainetrical section through the female element shown in Fig. 1;

Fig. 3 is an elevation of asecond form of female element;

Fig. 4 is a section through the female element shown in Fig. 3;

Fig. 5 is a diagram representing the elastic deformation of a female element when moved towards closed position;

' F ig. 6 represents, in elevation, a male element (mouth of a bottle) formed in accordance with one embodiment of the invention;

Fig. 7 is, a section taken on line 7 of Fig. 6;

Fig. 8 is a plan of the male element shown in Fig. 6;

Fig. 9 illustrates another form of male element.

Referring to Figs. 1 to 5 of the drawings,

both cases, being, preferably, convex with relation to the top of shell (z.

Ret'errin; now to Figs. 6 to 9, there is shown the mouth of a bottle or male element 0, provided (A) with. extensions d shaped so presents a curve increasing in radius in the direction of rotation of cap a and then decreasing,and (B) with an abutment 6 limiting the rotatory movement of cap a.

Indentations b and extensions (1 should be formed so that, when cap a is screwed onto mouth a, the cap is first elastically deformed (dotted line position Fig. 5) into a triangu- )forms loid shape as elements (1 and b ride over one another and then, once indentations b pass ,the point of maximum curvature of elements d, springs backpartially towards its original shape as it abuts against elements 6. Yieldable liners a are thus drawn down snugly onto the top edge of mouth 0, and cap a, having moved past its position of maximum deformation, cannot detach itself. The term radius as used in the claims, refers to the distance from the central vertical axis of the bottle.

What I claim is 1. In a closure, a male element having a plurality of external extensions formed thereon whose radii increase towards a maximum in a predetermined direction then decrease, said male element having abutments formed thereon adjacent the portions of said external extensions of decreasing radius, and a deformable female element having a plurality of internal extensions positioned to ride over said external extensions when said female element is rotated on the male element in the direction of increasing radius of said external extensions, said internal extensions being formed so as to be first spread apart by said external extensions and then move towards one another and engage said abutments when the points on said external extensions of maximum radius have been passed.

2. In a closure, a male element having a plurality of external extensions formed there- 00 on whose radii increase toward a maximum in a' predetermined direction and then decrease, said external extensions having a slightly helical form, said male element having abutments formed thereon adjacent the portions of said external extensions of decreasing radius, and a deformable female element having a plurality of internal extensions ositioned to ride over said external extenslon when said female element is rotated on the male element in the direction of increasing radius of said external extensions, said internal extensions being convex relatively to said external extensions when the former and the latter are in engagement, said female element being dimensioned so that said internal extensions are first spread apart by said external extensions and then move toward one another and engage said abutments when the points of said external exteno sion of maximum radius have been passed.

In, testimony whereof I afiix my signature.

HENRI MARIE MATHIEU dc BOISSAC. 

